Regarding the time, there are multiple reasons why we're doing it on this day, and at this time, but mostly because it's the time when schedules are open for all of the people involved. It's not just a couple of people doing this, there is a decent sized team who's members have conflicting schedules. Obviously, everyone is free at 2am, but we feel that it's safer to do this when we are fully staffed, so that if something does go wrong we aren't trying to call and wake people up in the middle of the night. We're mitigating against a worst case scenario.

I'm not at liberty to discuss exactly what we're doing, but we are doing maintenance to increase the speed of the database, which is our largest performance bottleneck.